I do agree that it’s unlikely you’ll (we’ll) get 17 years out of residential equipment in the future. Ten to 15 is more likely.
I had to read that twice. Ten years? Weak engineering or just another scam?
Our natural gas furnace is a HEIL installed in 1996. Our a/c is an old GE with a red General Electric emblem. How old is that? 30 years for sure.
At our other house it’s all Williamson. Heat pump and oil burning furnace I believe was installed in about 1980. Works great.